Sheet-metal-working press



May 22,11928.

F. J. RODE SHEET METAL WORKING PnEss May 22; 1928.

F. J. RODE SHEET METAL WORKING PRESS 'cs-sheet 2 Patented May 22, 1928.

UNITED. STATES FRIEDRICH J. RODE, OF CHICAGO,

ILLINOIS, ASSIGNOR TO MARQUETTE TOOL & MFG.

COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS.

SHEET-METAL-WOBKING PRESS.

Application led February This invention relates in general to sheet metal working presses, but more particularly to improved ineans whereby a sheet metal drawing press may lie readily con- 5 verted into a press for performing an entirely different metal working operation such as punching or the like, and vice versa. In sheet metal drawing presses the material to be operated upon is shaped between l two co-operating dies one of which is reciprooable toward and away from the other. A blank or work holding member is provided which co-operates with the reciprocating die for clamping or holding the work l therebetween during the shaping or drawing of the metal by the cosoperating dies.

The blank or work holding means is resisted in its movement in one direction by cushioning means .which causes the blank or work to be gripped with the desired or necessary pressure.

Ordinarily machines of this character when equipped with cushioning means cannot be used for any other purpose than drawing themetal and when the owner of such a press is desirousV of performing punching operations, such work must be done on an entirely different press, thereby necessitating the provision of two presses.

It is one of the objects of the present invention to provide improvedmeans whereby a sheet metal 'drawing press of this character embodying such cushioningmeans may be readily converted into a press for perform- 35 ingother and entirely different sheet metal operations, such as punching or` the like, and vice versa, without necessitating the entire dismantling of the cushioning means or the services of an expert mechanic to thus convert the press. A further object is to of this character improve ving the cushioning means of the cushioning means may be readily raised and lowered into and out of active position and at the same time always remain connectedwith orV suspended from the press. A further object is to provide connections between the parts of the cushioning means whereby said parts may (provide in a press means for mountbe readily connected and disconnected when desired.

To the attainment of these ends and the accomplishment of other new and useful obiects as will appear,

in the features of novelty, in substantially whereby a porti on the invention consists.,

7, 1927. Serial No. 166,305.

the construction, combination 'and arrangement of the several parts, hereinafter more fully described and claimed and shown in the accompanying drawings illustrating this invention, and in which Figure 1 is a view partly in elevation and partly in vertical section of a portion of a sheet metal drawing press constructed iii accordance with the principles of this invention, and with the parts in one position. Figure 2 is a viewsiinilar to Figure 1,

showing the position of the parts-when the press is converted from a drawing to a punching press.

Referring more particularly to the drawings the numeral 10 designates. generally the base of a sheet metal press having an upright 11 upon which a member 12 is adapted to be reciprocated in the ordinary and usual manner.

Carried by the reciprocating member 12 is 'a die 13 which co-operates with a die 14, the latter being supported by a bed plate 15 removably mounted upon the press.

All of the above referred to parts are of the ordinary and well known construction.

Secured to and depending from the press are hanger members 16, any number of which may be provided and these hanger members are preferably inthe form of rods having detachable and threaded engagement 17 with the press. l

The rods maybe of any desired length and in the lower extremity of each of which there is provided a socket or recess 18 opening ,through the end of the rod.

Arranged below the press is a cushioning device which preferably embodies a cylinder 19 in which a piston 20 reciprocates. C0nnected with the piston 2O is a piston rod 21 which extends through the closed end of the cylinder and the rod is preferably reduced at its free end as at 22, the reduced portion being adapted to enter the socket or recess 18. A fastening device 23 preferably in the form of a tapered pin passes through registering apertures in the telescoping portions of the rod 21 and hanger member 16 for detachably securingthe two together.

Any Vnumber of these cylinders and pistons may be provided, one for each of the hangers 16 and when two or more of the cylinders are employed, the piston rods 21' are preferably extended as at 24 to depend below the cylinders, and the extended por* nuts or collars 26 threaded upon the ends of the extensions. 24.

clamp the work 36 therebetween.

shapev the vmoved. An eye bolt. 38 may then/be connected with the pad 'or member 32.l A chain changeable cooperating dies, a work holding -and the'pgessure pad yor.. late This will also hold the' sleeve 29 which 2 merecer tions are connected' by means of a suitable tached to the bottom of the pressure pad or bar or rod 25 held in position by means of .member 32.

The pipe 37 may then be detached from the piston 20. The cylinder 19 and piston yThis rod or member '25 serves to maintain 2O together with the piston rod 21 is then the cylinders and piston in proper position lowered to a position under the press or with respect to each other.

I7llhe pistons 20 are maintained stationary andare held in position preferably by means in position in the opening in the hanger of nuts or collars 27 which cooperate with a member 16 so that the ends of the fastening shoulder 28 on the piston. rod. device will enter the slot 33 in the sleeve 29. Mountedupon each of the hanger. memrEhe pad or pin plate 32 is then lowered bers-16 for free sliding movement with reuntil the ends 39 of the 'slots 33 contact with spect thereto is a sleeve 29 one end 30-of the fastening device 23 (see Figure 2), Aso which .contacts with the closed end of the that the pad or plate 32 and the sleeve 29 may be lcarried away from the press.

cylinder 19 -andthe other end of the sleeve will be suspended by the hangermember 16.-

is connected by means of suitable fastening This will prevent the pressure pad or memdevices 31 with a pad or pin plate 32. ber .32 and sleeve 29 from dropping ydown The sleeve 29 is provided with elongated into the pit beneath the press.

openings 33 through which openings the A. plate40 having an opening 41 is then fastening device 23 also passes so as to opplaced upon the bed 10 of themachine, with erate therein. the opening 41 registering with the. opening Supported by the pad or pin plate 32 are 42 in the bed of the machine'.

pins 34 upon which a draw ring or blank A die 43 having an opening 44 therein is vholding member 35 is supported. This then placed upon the bed plate 40 andthe blank holder. 35 encompasses the die 14 and die 13 is interchanged with a punching die is adapted to cooperate with the die 13 to 45.

If desired a chute y46 may be placed under Fluid pressure is supplied to the cylinders the opening 42 in the bed of the machine 19 from any suitable source preferably so as to catch the punchings from the work The fastening devices 23 are then placed through a pipe 37'which is connected tothe 47 and deflect them away from the mapiston 20 so as to deliver the fluid pressure chine. through the piston 2O and between vthe piston and the head of the cylinder 19.

the ress from a punching press as shown When the fiuid is admitted into. the cylinin Figure 2 to a drawing press as shown in der, the cylinder 19 will be lraised with re- Figurel, the die 43 and plate 40 are first spectto 'the piston 2() 'and this movement removed together with the /chute 46. The will, through the vmedium of the sleeve 29, pad or pin plate 32 and .sleeve 29 1nay be raise the pad or pin plate 32 and^thereby raised by means of a chain, the fastenm position the blank or Work holding member devices 23 removed and the cylinders an 35'with respect to the die 14 so that the pistons raised until the reduced en d 22 upper surface of the member 35 .will be-sub' asses into the .socket 18 in the end of the stantially flush with the top of the die 14. an er member 16, after the pin or fasten- Obviously when it is desired to re-convert When the ram or member 12 islowered ing evice 23 is placed in position to connect' the die 13 cooperates with the member 35 the parts. .The pipe 37 is then connected to 4clamp the work therebetween and a furand fluid admitted to the cylinder so as to` ther `lwerin'g movement of the die 13 will hold the pin work over the die 14. At the the chain is eing detached. The dlesare late or pad 32 elevated while same time the member 35 will be depressedrinterchanged and the memberl 35 and pins against the fluid pressure inthe cylinder 19 34 laced in position.

b lowering the pad or pin plate 32 and the ile the preferred form of the invention l iA has been herein shown and described, vit is When ,itv is .desired to convert the press jto be understoodfthat various'changes may from a sheet metal drawing press into 'a be made in the details ot construction and press for performing anoth r and diierent in the combination and arrangement of the metalwor ing operation suc as a punchin several parts, within the scope of the claims, operation, the member 35 is first remove and then the pins 34 may be removed, after invention. which the die 14 and bed plate 15 are re- Y What is claimed as new.is:, l

1. .A sheet metall press embodying ill-termay then be connected with the e e bolt 38 element `co-ope'ratin'g ,with-`one*ojf said dies 32 1s held up vfor clamping' and holding the worktheref-f tothe opening v 1n Athe ed of the without departing from the spirit of this p'ress. between', a stationary hanger connected' with 'l movement of said element in one direction and-embodying a cylinder and piston, means detachably connecting the'piston with said hanger, means operatively connecting said cylinder with the said element and embodying a sleeve slidable upon the said hanger, andmeans for supplying fluid tothe cylinder, a portion of said connecting means serving to retain the said sleeve upon the said hanger when the cylnder and piston `are detached from the press.

sheet metal drawing press embodyggtpo-operating dies one of which is recipfalble towards and away from the other, a Work holding element co-opei'ating with the reciprocable die to clamp the work therebetween, a fluid pressure cushion for resisting the movement of said element in one (lirection, a hanger member supported by the press, said cushion embodying a cylinder and piston, a piston rod, means embodying a fastening member passing through said hanger and piston rod for detachably securing them together, a pressure plate, anda sleeve slidable upon the said hanger member and connected with said plate` said sleeve engaging the cylinder for moving the latter in one direction, there being an elongated opening in the sleeve through which the said fastening member passes, whereby said fastening member will support the sleeve upon the hanger when the cylinder and piston are removed. i

3. A sheet metal press embodying a work holding element, a cushion for resisting the movement of said element in one direction, said cushion embodying a pressure pail and a relatively movable cylinder and piston, a hanger member connected with the press, a piston rod detachably connected with the hanger member. a sleeve interposed between y the said pad and cylinder and engaging both,

said sleeve freely slidable up'on the said hanger member and' operating to impart a .relative movement to the cylinder and piston when said pad is moved, and means carried by the said hanger member and pro- ]ecting into the path of movement of a. portion of said sleeve to maintain the sleeve upon and for sup orting the sleeve by the hanger member w en the piston rod is detached from the hanger member and saidrod and cylinder-are removed.

4. A sheet metal press embodying a work holding element, a hanger member connected wlth the press,means for resisting the movement of said element `in one direction and embodying a pressure pad, a sleeve freely slidable upon the hanger member and engaging said sad, a. c linder andpiston one of which is etachab y connected wthsad hanger member and the other being engaged by the said sleeve whereby a relative movement willbe imparted to the cylinder and piston when said padis moved, there being ing being normally maintained out of contact with the last said means.

5. A sheet metal drawing press embodying a work holding element, means for yieldingly resisting the movement of said element in. one direction andV embodying a pressure pad, a hanger supported by the press, a cylinder and piston, a rod connected with the iston, said hanger and rod heilig telescopically connected, a fastening member passing transversely through said telescoping'portioiis for detacliably securing the rod and hanger together, and a sleeve freely slidable upon the hanger betweenand having contact with said pad and cylinder,

there being an elongated opening in and exi.

tending in, a direction lengthwise of said sleeve and within which opening a portion of the said fastening member operates, the end of the slot being adapted to engage said fastening member when the latter is in position and under predetermined conditions.

6. A sheet metal drawing press embodying a work holding element, means yieldingly resisting the movement of said element in one direction and embodying a pad, a hanger supported by the press, a'cylinder and piston, a piston rod telescoping with the hanger, a sleeve freely slidable upon the hanger, said sleeve engaging the said pad and cylinder, there being an elongated opening in 'the' sleeve extending in a direction lengthwise thereof, and a fastening element passing transversely through the telescoping` portions of the rod and hanger for detachably connecting them, said fastening element extending into said openingl and serving to support the sleeve when t e cyllnder and piston are removed.

7. A sheet metal drawing press embodying a work holding element, means yieldingly resisting the .movement of saidielement 'in one direction'and embodying a pad, a hanger supported by the press, a cylinder and piston, a piston rod telescoping with the hanger, a sleeve freely slidable upon the hanger, `said sleeve engaging the said pad and cylinder, there being an elongated openin the sleeve extending in a direction lengthwise thereof, a fastening element passing transversely through the telescopin 'portions of the rod and hanger for detac ably connecting them, said fastening element extending into said opening and serving tol support the sleeve when the cylinder and piston are removed, and means for supplying fluid to the cylinder.A

8. A sheet metal drawing press embodying a pressure pad, cushioning means, a hanger member, means detachably connecting the cushion with the `hanger and with' iis i respect to which hanger the said pad is movable, a sleeve `slidable upon the hanger and interposed between the pad and cushion whereby said cushion will resist the movement of the pad in one direction, and means connected with the hanger and co-operatin'g with said sleeve for supporting said-pad andv sleeve when the cushion is detached, whereby said press lmay be converted from a drawmg to a blanking or punching press.

9. A sheet metal drawing press embodying a pressure pad, fluid .pressurecon'trolled cushioning means, a hanger member, means detachably connecting the cushion with the hanger and with respect to which` hanger the said pad is movable, av sleeve slidable upon the hanger and interposed between the pad and cushion whereby said cushion will resist the movement of the pad in one direction, and means connected with the hanger and co-operating with said sleeve for supporting I' said pad vand sleeve when the'cushion is detached, whereby vsaid press may be converted from a drawing to -a blanking' or nevose.

vpunching press,the last recited means ein-f A odying a fastening pin like device passing through the hanger forsecuring certain' of the parts together, said pin operating in an elongated opening in said sleeve.

10. A sheet'metal drawing press embodying a pressure pad, cushioning means, a

hanger member, means detachablyl connecting the cushion with the hanger and withv j respect to Which hanger the pad is movable,

means disposed between the pad and cushion and' responsive to the movement ofthe pad whereby the cushion will resist themovement of the pad in one direction, and inter- 

